1225242 has 24 divisors (see below), whose sum is σ = 2718144. Its totient is φ = 398664.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225242 is 2425221.

It is an interprime number because it is at equal distance from previous prime (1225223) and next prime (1225261).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (113256).

2^1225242 is an apocalyptic number.

1225242 is an abundant number, since it is smaller than the sum of its proper divisors (1492902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225242 is a wasteful number, since it uses less digits than its factorization.

1225242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1631 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 1225242 is about 1106.9065001164. The cubic root of 1225242 is about 107.0057934965.

The spelling of 1225242 in words is "one million, two hundred twenty-five thousand, two hundred forty-two".